At 14:27 22.10.1997 -0700, you wrote:

Hi,

>Do you use a second PCF chip for control signals to the LCD? (ie.  r/w,
>en, rs lines)

I don't use any PCF at all. I've only used it to play and examine the I2C
(connecting switches and LEDs). Today the goal is to connect a couple of
PICs to a PowerPC (the embedded version).

>
>What do you do for a switch matrix using I2C?

Maybe there are some "off the shelf" keyboardcontrollers with integrated I2C
available. Another pssibility might be to use a GAL for multiplexind and the
PCF for converting it.

So long

Thomas
=8-)

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